XS Scuba Deluxe Cylinder EqualizerThe safe and easy way to transfer gas from one cylinder to another. Great for filling pony bottles. Both ends can be used on K valves as well as 200 bar and 300 bar DIN valves. Simply unthread the yoke adapter to expose the DIN connector. It has a large 2. 75 diameter, steel case gauge which provides dual scale psi and bar. The large, stainless steel bleed screw is replaceable. For use with up to 40% oxygen premixed. Components: High Pressure Gauge: